Added 0116 Leetcode solution

[Ayushmaanagarwal1211]

Description

I have added 116 leetcode solution Populating Next Right Pointers in Each Node (https://leetcode.com/problems/populating-next-right-pointers-in-each-node/)

closes : #769

Type of PR

• Bug fix
• Feature enhancement
• Documentation update
• Other (specify): _______________

Screenshots / Videos (if applicable)

Checklist

• I have performed a self-review of my code.
• I have read and followed the Contribution Guidelines.
• I have tested the changes thoroughly before submitting this pull request.
• I have provided relevant issue numbers, screenshots, and videos after making the changes.
• I have commented my code, particularly in hard-to-understand areas.

Additional Context

[Include any additional information or context that might be helpful for reviewers.]

Resources for Guidance

Here are some resources that may be helpful as you contribute to CodeHarborHub:

• Code Harbor Hub Community Features
• Docusaurus Documentation
• React.js Documentation
• Markdown Guide
• MDX Documentation
• Mermaid Documentation

Resources for DSA Features on Our Site:

• Tabs: Switch Languages
• Line Numbering
• Math Equations

[deepsource-io]

Here's the code health analysis summary for commits 795e3b6..22a31fd. View details on DeepSource ↗.

Analysis Summary

Analyzer	Status	Summary	Link
JavaScript	✅ Success		View Check ↗

---

💡 If you’re a repository administrator, you can configure the quality gates from the settings.

[ajay-dhangar]

@Ayushmaanagarwal1211 change your file name based on your solutions

because this file already exist and with relate to solution but your file is not match your solution so, change it.

[sonarqubecloud]

Quality Gate failed

Failed conditions
30.2% Duplication on New Code (required ≤ 3%)

See analysis details on SonarCloud

[Ayushmaanagarwal1211]

@ajay-dhangar Done

[ajay-dhangar]

Done